European countries are experiencing issues with declining populations. one of the main causes of this decline is a. constant warfare b. disease c. lower birthrates d. a poor standard of living

Option: C. lower birthrates

Explanation:

European countries are experiencing issues with the declining population because of several reasons. The results of low birthrate include socioeconomic reasons to postpone childbearing, changing gender roles and decline in the desired for children. In Europe, some of the countries have passed through many changes in political and economic. People are uncertain about their future in these countries.